Interference measurement method, base station and user equipment

ABSTRACT

Embodiments of the present invention provide an interference measurement method, a base station, and a user equipment. The method includes: determining, by a user equipment, a first resource for interference measurement in a first subframe or determining a second resource not for interference measurement in the first subframe according to at least one of the zero-power CSI-RS configuration information, the non-zero power CSI-RS configuration information, and the CSI-IM configuration information; and performing interference measurement on the first resource, or performing no interference measurement on the second resource. The embodiments of the present invention can improve precision of interference measurement.

CROSS-REFERENCE

This application is a continuation of International Patent ApplicationNo. PCT/CN2012/082449, filed on Sep. 29, 2012, which is herebyincorporated by reference in its entirety.

TECHNICAL FIELD

Embodiments of the present invention relate to the field ofcommunications technologies, and in particular, to an interferencemeasurement method, a base station, and a user equipment.

BACKGROUND

In a radio communications system, in order for a user equipment (UserEquipment, UE for short) to measure downlink channel state information(Channel State Information, CSI for short), a base station needs to senda certain reference signal to the UE in a coverage area for the purposeof downlink channel measurement. For example, in a Third GenerationPartnership Project (the 3rd Generation Partnership Project, 3GPP forshort) Long Term Evolution (Long Term Evolution, LTE for short) Release11 (Release 11) protocol, in order for the user equipment to measuredownlink channel state information (Channel State Information, CSI forshort), the base station further needs to configure one or more channelstate information interference measurement (Channel StateInformation-Interference Measurement, CSI-IM for short) resources forthe UE, and the UE measures interference on the CSI-IM resources andcalculates the CSI according to the measured interference.

In the prior art, to obtain higher user throughput, a coordinatedmulti-point transmission and reception (Coordinated Multiple Pointtransmission and reception, CoMP for short) technology may be applied inthe communications system. The coordinated multi-point transmission andreception technology refers to that multiple access points provide dataservices for one or more users simultaneously. When coverage of a macrobase station in the coordinated multi-point transmission and receptiontechnology fully includes coverage of a micro base station, the userequipment (User Equipment, UE for short) can be served by both the macrobase station and the micro base station in a specific region of a cellcovered by the micro base station. When the UE is located in the cellcovered by the micro base station and served by the micro base station,and the UE needs to measure the CSI presumed to exist when the UE isserved by the macro base station, the UE needs to measure interferenceincluding micro base station interference according to the CSI-IMresources, and calculate the CSI according to measured interferenceresult information.

However, on the CSI-IM resources, a signal received by the UE from themicro base station may be a data signal, and consequently, theinterference measured by the UE according to the CSI-IM resources is notaccurate.

SUMMARY

Embodiments of the present invention provide an interference measurementmethod, a base station, and a user equipment, which are used to improveaccuracy of interference measurement.

According to a first aspect, an embodiment of the present inventionprovides an interference measurement method, including:

receiving, by a user equipment, at least one of zero-power channel stateinformation reference signal CSI-RS configuration information, non-zeropower CSI-RS configuration information, and channel state informationinterference measurement CSI-IM configuration information that are sentby a base station;

determining, by the user equipment, a first resource for interferencemeasurement in a first subframe or determining a second resource not forinterference measurement in the first subframe according to at least oneof the zero-power CSI-RS configuration information, the non-zero powerCSI-RS configuration information, and the CSI-IM configurationinformation; and

performing, by the user equipment, interference measurement on the firstresource in the first subframe, or, performing no interferencemeasurement on the second resource in the first subframe.

In a first possible implementation manner, according to the firstaspect, a specific implementation manner is that: the first subframe isa subframe for receiving downlink data, and the determining, by the userequipment, a second resource not for interference measurement in thefirst subframe according to at least one of the zero-power CSI-RSconfiguration information, the non-zero power CSI-RS configurationinformation, and the CSI-IM configuration information, includes:

determining, by the user equipment, existence of a CSI-IM resource inthe subframe for receiving downlink data and existence of at least oneresource element RE other than a zero-power CSI-RS resource in theCSI-IM resource according to the CSI-IM configuration information andthe zero-power CSI-RS configuration information, so that the userequipment determines that the CSI-IM resource is the second resource notfor interference measurement; or

determining, by the user equipment, existence of a CSI-IM resource inthe subframe for receiving downlink data and existence of at least oneRE other than a non-zero power CSI-RS resource in the CSI-IM resourceaccording to the CSI-IM configuration information and the non-zero powerCSI-RS configuration information, so that the user equipment determinesthat the CSI-IM resource is the second resource not for interferencemeasurement; or

according to the CSI-IM configuration information, determining, by theuser equipment, that a CSI-IM resource exists in the subframe forreceiving downlink data, and determining that the CSI-IM resource is forreceiving downlink data sent by the base station, so that the userequipment determines that the CSI-IM resource is the second resource notfor interference measurement.

In a second possible implementation manner, according to the firstpossible implementation manner of the first aspect, a specificimplementation manner is that: the performing, by the user equipment, nointerference measurement on the second resource in the first subframeincludes:

performing, by the user equipment, no interference measurement on thesecond resource in the subframe for receiving downlink data.

In a third possible implementation manner, according to the firstaspect, a specific implementation manner is that: the first subframe isa candidate interference measurement reference resource subframe, andthe determining, by the user equipment, a second resource not forinterference measurement in the first subframe according to at least oneof the zero-power CSI-RS configuration information, the non-zero powerCSI-RS configuration information, and the CSI-IM configurationinformation, includes:

determining, by the user equipment, existence of a CSI-IM resource inthe first subframe and existence of at least one RE, which is a non-zeropower CSI-RS resource, in the CSI-IM resource according to the CSI-IMconfiguration information and the non-zero power CSI-RS configurationinformation, so that the user equipment determines that the CSI-IMresource is the second resource not for interference measurement.

In a fourth possible implementation manner, according to the firstaspect, a specific implementation manner is that: the first subframe isa candidate interference measurement reference resource subframe, andthe determining, by the user equipment, a first resource forinterference measurement in the first subframe according to at least oneof the zero-power CSI-RS configuration information, the non-zero powerCSI-RS configuration information, and the CSI-IM configurationinformation, includes:

determining, by the user equipment, existence of a CSI-IM resource inthe first subframe and nonexistence of any RE, which is a non-zero powerCSI-RS resource, in the CSI-IM resource according to the CSI-IMconfiguration information and the non-zero power CSI-RS configurationinformation, so that the user equipment determines that the CSI-IMresource is the first resource for interference measurement.

In a fifth possible implementation manner, according to the firstaspect, a specific implementation manner is that: the first subframe isa subframe not for receiving downlink data, and the determining, by theuser equipment, a first resource for interference measurement in thefirst subframe according to at least one of the zero-power CSI-RSconfiguration information, the non-zero power CSI-RS configurationinformation, and the CSI-IM configuration information, includes:

determining, by the user equipment, existence of a CSI-IM resource inthe subframe not for receiving downlink data and existence of at leastone RE other than a zero-power CSI-RS resource in the CSI-IM resourceaccording to the CSI-IM configuration information and the zero-powerCSI-RS configuration information, so that the user equipment determinesthat the CSI-IM resource is the first resource for interferencemeasurement.

In a sixth possible implementation manner, according to the fifthpossible implementation manner of the first aspect, a specificimplementation manner is that: the performing, by the user equipment,interference measurement on the first resource in the first subframeincludes:

performing, by the user equipment, interference measurement on the firstresource in the subframe not for receiving downlink data.

In a seventh possible implementation manner, according to the firstaspect, a specific implementation manner is that: the first subframe isa subframe for receiving downlink data, and the determining, by the userequipment, a first resource for interference measurement in the firstsubframe according to at least one of the zero-power CSI-RSconfiguration information, the non-zero power CSI-RS configurationinformation, and the CSI-IM configuration information, includes:

determining, by the user equipment, existence of a CSI-IM resource inthe subframe for receiving downlink data and existence of at least oneRE, which is a zero-power CSI-RS resource, in the CSI-IM resourceaccording to the CSI-IM configuration information and the zero-powerCSI-RS configuration information, so that the user equipment determinesthat an RE, which is a zero-power CSI-RS resource, in the CSI-IMresource is the first resource for interference measurement; or

according to the CSI-IM configuration information, determining, by theuser equipment, that a CSI-IM resource exists in the subframe forreceiving downlink data, and determining that at least one RE in theCSI-IM resource is not for receiving downlink data sent by the basestation, so that the user equipment determines that the RE not forreceiving downlink data sent by the base station in the CSI-IM resourceis the first resource for interference measurement.

In an eighth possible implementation manner, according to the seventhpossible implementation manner of the first aspect, a specificimplementation manner is that: the performing, by the user equipment,interference measurement on the first resource in the first subframeincludes:

performing, by the user equipment, interference measurement on the firstresource in the subframe for receiving downlink data.

In a ninth possible implementation manner, according to the first aspectand any one of the first to eighth possible implementation manners ofthe first aspect, a specific implementation manner is that: before thedetermining a first resource for interference measurement in the firstsubframe or determining a second resource not for interferencemeasurement in the first subframe, the method further includes:

receiving, by the user equipment, scheduling information sent by thebase station; and

determining, by the user equipment according to the schedulinginformation, information about the subframe for receiving downlink data.

In a tenth possible implementation manner, according to the first aspectand any one of the first to eighth possible implementation manners ofthe first aspect, a specific implementation manner is that: before thedetermining a first resource for interference measurement in the firstsubframe or determining a second resource not for interferencemeasurement in the first subframe, the method further includes:

detecting, by the user equipment, scheduling information sent by thebase station; and

if the user equipment fails to detect the scheduling information,determining, by the user equipment, that a detected subframe is subframenot for receiving downlink data.

In an eleventh possible implementation manner, according to the firstaspect and any one of the first to tenth possible implementation mannersof the first aspect, a specific implementation manner is that: beforethe determining a first resource for interference measurement in thefirst subframe or determining a second resource not for interferencemeasurement in the first subframe, the method further includes:

receiving, by the user equipment, interference measurement indicationinformation sent by the base station, where the interference measurementindication information is used as an instruction of determining thefirst resource and performing interference measurement on the firstresource in the subframe or an instruction of determining the secondresource and performing no interference measurement on the secondresource in the subframe.

In a twelfth possible implementation manner, according to the eleventhpossible implementation manner, a specific implementation manner isthat: the interference measurement indication information corresponds toat least one CSI-IM resource configured by the base station for the userequipment, or corresponds to at least one CSI process configured by thebase station for the user equipment.

According to a second aspect, an embodiment of the present inventionfurther provides another interference measurement method, including:

sending, by a base station, at least one of zero-power channel stateinformation reference signal CSI-RS configuration information, non-zeropower CSI-RS configuration information, and channel state informationinterference measurement CSI-IM configuration information to a userequipment, so that the user equipment determines a first resource forinterference measurement in a first subframe or determines a secondresource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information.

In a first possible implementation manner, according to the secondaspect, a specific implementation manner is that: the method furtherincludes:

sending, by the base station, scheduling information to the userequipment, so that the user equipment determines, according to thescheduling information, information about a subframe for receivingdownlink data.

In a second possible implementation manner, according to the secondaspect or the first possible implementation manner of the second aspect,a specific implementation manner is that: the method further includes:

sending, by the base station, interference measurement indicationinformation to the user equipment, where the interference measurementindication information is used as an instruction of determining thefirst resource and performing interference measurement on the firstresource in the subframe or an instruction of determining the secondresource and performing no interference measurement on the secondresource in the subframe.

In a third possible implementation manner, according to the secondpossible implementation manner, a specific implementation manner isthat: the interference measurement indication information corresponds toat least one CSI-RS resource configured by the base station for the userequipment, or corresponds to at least one CSI process configured by thebase station for the user equipment.

According to a third aspect, an embodiment of the present inventionprovides a user equipment, including:

a receiving module, configured to receive at least one of zero-powerchannel state information reference signal CSI-RS configurationinformation, non-zero power CSI-RS configuration information, andchannel state information interference measurement CSI-IM configurationinformation that are sent by the base station;

a processing module, configured to determine a first resource forinterference measurement in a first subframe or determine a secondresource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information; and

a measuring module, configured to perform interference measurement onthe first resource in the first subframe, or, perform no interferencemeasurement on the second resource in the first subframe.

In a first possible implementation manner, according to the thirdaspect, a specific implementation manner is that: the first subframe isa subframe for receiving downlink data, the processing module determinesthe second resource not for interference measurement in the firstsubframe according to at least one of the zero-power CSI-RSconfiguration information, the non-zero power CSI-RS configurationinformation, and the CSI-IM configuration information, and theprocessing module is specifically configured to:

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one resource element RE otherthan a zero-power CSI-RS resource in the CSI-IM resource according tothe CSI-IM configuration information and the zero-power CSI-RSconfiguration information, so that the processing module determines thatthe CSI-IM resource is the second resource not for interferencemeasurement; or

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one RE other than a non-zeropower CSI-RS resource in the CSI-IM resource according to the CSI-IMconfiguration information and the non-zero power CSI-RS configurationinformation, so that the processing module determines that the CSI-IMresource is the second resource not for interference measurement; or

according to the CSI-IM configuration information, determine that aCSI-IM resource exists in the subframe for receiving downlink data, anddetermine that the CSI-IM resource is for receiving downlink data sentby the base station, so that the processing module determines that theCSI-IM resource is the second resource not for interference measurement.

In a second possible implementation manner, according to the firstpossible implementation manner of the third aspect, a specificimplementation manner is that: the processing module is specificallyconfigured to:

perform no interference measurement on the second resource in thesubframe for receiving downlink data.

In a third possible implementation manner, according to the thirdaspect, a specific implementation manner is that: the first subframe isa candidate interference measurement reference resource subframe, theprocessing module determines a second resource not for interferencemeasurement in the first subframe according to at least one of thezero-power CSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information, andthe processing module is specifically configured to:

determine existence of a CSI-IM resource in the first subframe andexistence of at least one RE, which is a non-zero power CSI-RS resource,in the CSI-IM resource according to the CSI-IM configuration informationand the non-zero power CSI-RS configuration information, so that theprocessing module determines that the CSI-IM resource is the secondresource not for interference measurement.

In a fourth possible implementation manner, according to the thirdaspect, a specific implementation manner is that: the first subframe isa candidate interference measurement reference resource subframe, theprocessing module determines a first resource for interferencemeasurement in the first subframe according to at least one of thezero-power CSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information, andthe processing module is specifically configured to:

determine existence of a CSI-IM resource in the first subframe andnonexistence of any RE, which is a non-zero power CSI-RS resource, inthe CSI-IM resource according to the CSI-IM configuration informationand the non-zero power CSI-RS configuration information, so that theprocessing module determines that the CSI-IM resource is the firstresource for interference measurement.

In a fifth possible implementation manner, according to the thirdaspect, a specific implementation manner is that: the first subframe isa subframe not for receiving downlink data, the processing moduledetermines a first resource for interference measurement in the firstsubframe according to at least one of the zero-power CSI-RSconfiguration information, the non-zero power CSI-RS configurationinformation, and the CSI-IM configuration information, and theprocessing module is specifically configured to:

determine existence of a CSI-IM resource in the subframe not forreceiving downlink data and existence of at least one RE other than azero-power CSI-RS resource in the CSI-IM resource according to theCSI-IM configuration information and the zero-power CSI-RS configurationinformation, so that the processing module determines that the CSI-IMresource is the first resource for interference measurement.

In a sixth possible implementation manner, according to the fifthpossible implementation manner of the third aspect, a specificimplementation manner is that: the measuring module is specificallyconfigured to:

perform interference measurement on the first resource in the subframenot for receiving downlink data.

In a seventh possible implementation manner, according to the thirdaspect, a specific implementation manner is that: the first subframe isa subframe for receiving downlink data, the processing module determinesa first resource for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information, and the processing module isspecifically configured to:

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one RE, which is a zero-powerCSI-RS resource, in the CSI-IM resource according to the CSI-IMconfiguration information and the zero-power CSI-RS configurationinformation, so that the processing module determines that an RE, whichis a zero-power CSI-RS resource, in the CSI-IM resource is the firstresource for interference measurement; or

according to the CSI-IM configuration information, determine that aCSI-IM resource exists in the subframe for receiving downlink data, anddetermine that at least one RE in the CSI-IM resource is not forreceiving downlink data sent by the base station, so that the processingmodule determines that the RE not for receiving downlink data sent bythe base station in the CSI-IM resource is the first resource forinterference measurement.

In an eighth possible implementation manner, according to the seventhpossible implementation manner of the third aspect, a specificimplementation manner is that: the measuring module is specificallyconfigured to:

perform interference measurement on the first resource in the subframefor receiving downlink data.

In a ninth possible implementation manner, according to the third aspectand any one of the first to eighth possible implementation manners ofthe third aspect, a specific implementation manner is that: before afirst resource for interference measurement in the first subframe isdetermined or a second resource not for interference measurement in thefirst subframe is determined, the receiving module is furtherspecifically configured to:

receive scheduling information sent by the base station; and

determine, according to the scheduling information, information aboutthe subframe for receiving downlink data.

In a tenth possible implementation manner, according to the third aspectand any one of the first to eighth possible implementation manners ofthe third aspect, a specific implementation manner is that: before afirst resource for interference measurement in the first subframe isdetermined or a second resource not for interference measurement in thefirst subframe is determined, the receiving module is furtherspecifically configured to:

detect scheduling information sent by the base station; and

if the scheduling information is not detected, determine that a detectedsubframe is subframe not for receiving downlink data.

In an eleventh possible implementation manner, according to the thirdaspect and any one of the first to tenth possible implementation mannersof the third aspect, a specific implementation manner is that: before afirst resource for interference measurement in the first subframe isdetermined or a second resource not for interference measurement in thefirst subframe is determined, the receiving module is furtherspecifically configured to:

receive interference measurement indication information sent by the basestation, where the interference measurement indication information isused as an instruction of determining the first resource and performinginterference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.

In a twelfth possible implementation manner, according to the eleventhpossible implementation manner, a specific implementation manner isthat: the interference measurement indication information corresponds toat least one CSI-IM resource configured by the base station for the userequipment, or corresponds to at least one CSI process configured by thebase station for the user equipment.

According to a fourth aspect, an embodiment of the present inventionprovides a base station, including:

a sending module, configured to send at least one of zero-power channelstate information reference signal CSI-RS configuration information,non-zero power CSI-RS configuration information, and channel stateinformation interference measurement CSI-IM configuration information toa user equipment, so that the user equipment determines a first resourcefor interference measurement in a first subframe or determines a secondresource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information.

In a first possible implementation manner, according to the fourthaspect, a specific implementation manner is that: the sending module isfurther configured to:

send scheduling information to the user equipment, so that the userequipment determines, according to the scheduling information,information about a subframe for receiving downlink data.

In a second possible implementation manner, according to the fourthaspect or the first possible implementation manner of the fourth aspect,a specific implementation manner is that: the sending module is furtherspecifically configured to:

send interference measurement indication information to the userequipment, where the interference measurement indication information isused as an instruction of determining the first resource and performinginterference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.

In a third possible implementation manner, according to the secondpossible implementation manner, a specific implementation manner isthat: the interference measurement indication information corresponds toat least one CSI-RS resource configured by the base station for the userequipment, or corresponds to at least one CSI process configured by thebase station for the user equipment.

According to a fifth aspect, an embodiment of the present inventionprovides a user equipment, including:

a receiver, configured to receive at least one of zero-power channelstate information reference signal CSI-RS configuration information,non-zero power CSI-RS configuration information, and channel stateinformation interference measurement CSI-IM configuration informationthat are sent by the base station; and

a processor, configured to determine a first resource for interferencemeasurement in a first subframe or determine a second resource not forinterference measurement in the first subframe according to at least oneof the zero-power CSI-RS configuration information, the non-zero powerCSI-RS configuration information, and the CSI-IM configurationinformation, where

the processor is further configured to perform interference measurementon the first resource in the first subframe, or, perform no interferencemeasurement on the second resource in the first subframe.

In a first possible implementation manner, according to the fifthaspect, a specific implementation manner is that: the first subframe isa subframe for receiving downlink data, the processor determines asecond resource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information, and the processor is specificallyconfigured to:

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one resource element RE otherthan a zero-power CSI-RS resource in the CSI-IM resource according tothe CSI-IM configuration information and the zero-power CSI-RSconfiguration information, so that the processor determines that theCSI-IM resource is the second resource not for interference measurement;or

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one RE other than a non-zeropower CSI-RS resource in the CSI-IM resource according to the CSI-IMconfiguration information and the non-zero power CSI-RS configurationinformation, so that the processor determines that the CSI-IM resourceis the second resource not for interference measurement; or

according to the CSI-IM configuration information, determine that aCSI-IM resource exists in the subframe for receiving downlink data, anddetermine that the CSI-IM resource is for receiving downlink data sentby the base station, so that the processor determines that the CSI-IMresource is the second resource not for interference measurement.

In a second possible implementation manner, according to the firstpossible implementation manner of the fifth aspect, a specificimplementation manner is that: the processor is specifically configuredto:

perform no interference measurement on the second resource in thesubframe for receiving downlink data.

In a third possible implementation manner, according to the fifthaspect, a specific implementation manner is that: the first subframe isa candidate interference measurement reference resource subframe, theprocessor determines a second resource not for interference measurementin the first subframe according to at least one of the zero-power CSI-RSconfiguration information, the non-zero power CSI-RS configurationinformation, and the CSI-IM configuration information, and the processoris specifically configured to:

determine existence of a CSI-IM resource in the first subframe andexistence of at least one RE, which is a non-zero power CSI-RS resource,in the CSI-IM resource according to the CSI-IM configuration informationand the non-zero power CSI-RS configuration information, so that theprocessor determines that the CSI-IM resource is the second resource notfor interference measurement.

In a fourth possible implementation manner, according to the fifthaspect, a specific implementation manner is that: the first subframe isa candidate interference measurement reference resource subframe, theprocessor determines a first resource for interference measurement inthe first subframe according to at least one of the zero-power CSI-RSconfiguration information, the non-zero power CSI-RS configurationinformation, and the CSI-IM configuration information, and the processoris specifically configured to:

determine existence of a CSI-IM resource in the first subframe andnonexistence of any RE, which is a non-zero power CSI-RS resource, inthe CSI-IM resource according to the CSI-IM configuration informationand the non-zero power CSI-RS configuration information, so that theprocessor determines that the CSI-IM resource is the first resource forinterference measurement.

In a fifth possible implementation manner, according to the fifthaspect, a specific implementation manner is that: the first subframe isa subframe not for receiving downlink data, the processor determines afirst resource for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information, and the processor is specificallyconfigured to:

determine existence of a CSI-IM resource in the subframe not forreceiving downlink data and existence of at least one RE other than azero-power CSI-RS resource in the CSI-IM resource according to theCSI-IM configuration information and the zero-power CSI-RS configurationinformation, so that the processor determines that the CSI-IM resourceis the first resource for interference measurement.

In a sixth possible implementation manner, according to the fifthpossible implementation manner of the fifth aspect, a specificimplementation manner is that: the processor is further specificallyconfigured to:

perform interference measurement on the first resource in the subframenot for receiving downlink data.

In a seventh possible implementation manner, according to the fifthaspect, a specific implementation manner is that: the first subframe isa subframe for receiving downlink data, the processor determines a firstresource for interference measurement in the first subframe according toat least one of the zero-power CSI-RS configuration information, thenon-zero power CSI-RS configuration information, and the CSI-IMconfiguration information, and the processor is specifically configuredto:

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one RE, which is a zero-powerCSI-RS resource, in the CSI-IM resource according to the CSI-IMconfiguration information and the zero-power CSI-RS configurationinformation, so that the processor determines that an RE, which is azero-power CSI-RS resource, in the CSI-IM resource is the first resourcefor interference measurement; or

according to the CSI-IM configuration information, determine that aCSI-IM resource exists in the subframe for receiving downlink data, anddetermine that at least one RE in the CSI-IM resource is not forreceiving downlink data sent by the base station, so that the processordetermines that the RE not for receiving downlink data sent by the basestation in the CSI-IM resource is the first resource for interferencemeasurement.

In an eighth possible implementation manner, according to the seventhpossible implementation manner of the fifth aspect, a specificimplementation manner is that: the processor is further specificallyconfigured to:

perform interference measurement on the first resource in the subframefor receiving downlink data.

In a ninth possible implementation manner, according to the fifth aspectand any one of the first to eighth possible implementation manners ofthe fifth aspect, a specific implementation manner is that: before afirst resource for interference measurement in the first subframe isdetermined or a second resource not for interference measurement in thefirst subframe is determined, the receiver is further specificallyconfigured to:

receive scheduling information sent by the base station; and

determine, according to the scheduling information, information aboutthe subframe for receiving downlink data.

In a tenth possible implementation manner, according to the fifth aspectand any one of the first to eighth possible implementation manners ofthe fifth aspect, a specific implementation manner is that: before afirst resource for interference measurement in the first subframe isdetermined or a second resource not for interference measurement in thefirst subframe is determined, the receiver is further specificallyconfigured to:

detect scheduling information sent by the base station; and

if the scheduling information is not detected, determine that a detectedsubframe is subframe not for receiving downlink data.

In an eleventh possible implementation manner, according to the fifthaspect and any one of the first to tenth possible implementation mannersof the fifth aspect, a specific implementation manner is that: before afirst resource for interference measurement in the first subframe isdetermined or a second resource not for interference measurement in thefirst subframe is determined, the receiver is further specificallyconfigured to:

receive interference measurement indication information sent by the basestation, where the interference measurement indication information isused as an instruction of determining the first resource and performinginterference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.

In a twelfth possible implementation manner, according to the eleventhpossible implementation manner, a specific implementation manner isthat: the interference measurement indication information corresponds toat least one CSI-IM resource configured by the base station for the userequipment, or corresponds to at least one CSI process configured by thebase station for the user equipment.

According to a sixth aspect, an embodiment of the present inventionprovides a base station, including:

a sender, configured to send at least one of zero-power channel stateinformation reference signal CSI-RS configuration information, non-zeropower CSI-RS configuration information, and channel state informationinterference measurement CSI-IM configuration information to a userequipment, so that the user equipment determines a first resource forinterference measurement in a first subframe or determines a secondresource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information.

In a first possible implementation manner, according to the sixthaspect, a specific implementation manner is that: the sender is furtherconfigured to:

send scheduling information to the user equipment, so that the userequipment determines, according to the scheduling information,information about a subframe for receiving downlink data.

In a second possible implementation manner, according to the sixthaspect or the first possible implementation manner of the sixth aspect,a specific implementation manner is that: the sender is furtherspecifically configured to:

send interference measurement indication information to the userequipment, where the interference measurement indication information isused as an instruction of determining the first resource and performinginterference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.

In a third possible implementation manner, according to the secondpossible implementation manner, a specific implementation manner isthat: the interference measurement indication information corresponds toat least one CSI-RS resource configured by the base station for the userequipment, or corresponds to at least one CSI process configured by thebase station for the user equipment.

In the interference measurement method, the base station, and the userequipment provided in the embodiments of the present invention, the userequipment determines a first resource for interference measurement in afirst subframe or determines a second resource not for interferencemeasurement in the first subframe according to at least one ofzero-power CSI-RS configuration information, non-zero power CSI-RSconfiguration information, and CSI-IM configuration information; and theuser equipment performs interference measurement on the first resourcein the first subframe or performs no interference measurement on thesecond resource in the first subframe. The interference measurement anddata receiving are not executed simultaneously, and the UE receives onlyinterfering signals rather than data signals when measuringinterference, so that the UE can measure interference accurately.

BRIEF DESCRIPTION OF DRAWINGS

To describe the technical solutions in the embodiments of the presentinvention more clearly, the following briefly introduces theaccompanying drawings required for describing the embodiments.Apparently, the accompanying drawings in the following description showmerely some embodiments of the present invention, and persons ofordinary skill in the art may still derive other drawings from theseaccompanying drawings without creative efforts.

FIG. 1 is a schematic flowchart of an interference measurement methodaccording to Embodiment 1 of the present invention;

FIG. 2 is a schematic flowchart of an interference measurement methodaccording to Embodiment 2 of the present invention;

FIG. 3 is a structural diagram of a user equipment according toEmbodiment 1 of the present invention;

FIG. 4 is a schematic structural diagram of a base station according toEmbodiment 1 of the present invention;

FIG. 5 is a schematic structural diagram of a user equipment accordingto Embodiment 2 of the present invention; and

FIG. 6 is a schematic structural diagram of a base station according toEmbodiment 2 of the present invention.

DESCRIPTION OF EMBODIMENTS

The following clearly describes the technical solutions in theembodiments of the present invention with reference to the accompanyingdrawings in the embodiments of the present invention. Apparently, thedescribed embodiments are merely a part rather than all of theembodiments of the present invention. All other embodiments obtained bypersons of ordinary skill in the art based on the embodiments of thepresent invention without creative efforts shall fall within theprotection scope of the present invention.

The interference measurement method in the embodiments of the presentinvention may be determined and discussed in the 3^(rd) GenerationPartnership Project (the 3^(rd) Generation Partnership Project, 3GPP forshort) Long Term Evolution (Long Term Evolution, LTE for short) Release11 (Release 11), and is applicable to R11 and subsequent versions.

FIG. 1 is a schematic flowchart of an interference measurement methodaccording to Embodiment 1 of the present invention. As shown in FIG. 1,the entity for performing the embodiment of the present invention is auser equipment (User Equipment, UE for short). The interferencemeasurement method provided in the embodiments of the present inventionincludes:

S101. A user equipment receives at least one of zero-power channel stateinformation reference signal CSI-RS configuration information, non-zeropower CSI-RS configuration information, and channel state informationinterference measurement CSI-IM configuration information that are sentby a base station.

S102. The user equipment determines a first resource for interferencemeasurement in a first subframe or determines a second resource not forinterference measurement in the first subframe according to at least oneof the zero-power CSI-RS configuration information, the non-zero powerCSI-RS configuration information, and the CSI-IM configurationinformation.

S103. The user equipment performs interference measurement on the firstresource in the first subframe, or, performs no interference measurementon the second resource in the first subframe.

CSI-RS resource parameters configured by the base station for the UE inthe embodiment of the present invention mainly include: a CSI-RS mappinglocation, which indicates resource elements (Resource Element, RE forshort) to which a CSI-RS is mapped in a certain subframe; and a CSI-RSsubframe configuration, which indicates subframes in which a CSI-RS of aspecific UE is transmitted. CSI-RS configuration information that isalready configured includes non-zero power CSI-RS configurationinformation, including the number of ports, a pilot pattern, a cycle,and a subframe offset; and zero-power CSI-RS configuration information,including a RE location, a cycle, a subframe offset, and so on.

In the 3GPP LTE Release 11 protocol, the base station further configureschannel state information interference measurement (Channel StateInformation Interference Measurement, CSI-IM for short) configurationinformation for the UE, where the CSI-IM configuration informationincludes one or more CSI-IM resources REs for interference measurement.

The user equipment may determine a first resource for interferencemeasurement in a first subframe or determine a second resource not forinterference measurement in the first subframe according to at least oneof the zero-power CSI-RS configuration information, the non-zero powerCSI-RS configuration information, and the CSI-IM configurationinformation. For example, the user equipment determines existence of aCSI-IM resource in the subframe for receiving downlink data andexistence of at least one resource element RE other than a zero-powerCSI-RS resource in the CSI-IM resource according to the CSI-IMconfiguration information and the zero-power CSI-RS configurationinformation, so that the user equipment determines that the CSI-IMresource is the second resource not for interference measurement andcapable of receiving downlink data normally; the user equipmentdetermines existence of a CSI-IM resource in the subframe not forreceiving downlink data and existence of at least one resource elementRE other than a zero-power CSI-RS resource in the CSI-IM resourceaccording to the CSI-IM configuration information and the zero-powerCSI-RS configuration information, so that the user equipment determinesthat the CSI-IM resource is the first resource for interferencemeasurement and does not receive downlink data on the first resource.

The user equipment may perform interference measurement on the firstresource in the first subframe, or perform no interference measurementon the second resource in the first subframe.

In the interference measurement method provided in the embodiment of thepresent invention, the user equipment determines a first resource forinterference measurement in a first subframe or determines a secondresource not for interference measurement in the first subframeaccording to at least one of zero-power CSI-RS configurationinformation, non-zero power CSI-RS configuration information, and CSI-IMconfiguration information; and the user equipment performs interferencemeasurement on the first resource in the first subframe or performs nointerference measurement on the second resource in the first subframe.The interference measurement and data receiving are not executedsimultaneously, and the UE receives only interfering signals rather thandata signals when measuring interference, so that the UE can measureinterference accurately.

The following gives an example to describe that the user equipmentdetermines a second resource not for interference measurement in thefirst subframe according to at least one of the zero-power CSI-RSconfiguration information, the non-zero power CSI-RS configurationinformation, and the CSI-IM configuration information when the firstsubframe is a subframe for receiving downlink data.

In a possible implementation manner, the user equipment may determineexistence of a CSI-IM resource in the subframe for receiving downlinkdata according to the CSI-IM configuration information and determineexistence of at least one resource element RE other than a zero-powerCSI-RS resource in the CSI-IM resource according to the zero-powerCSI-RS configuration information, so that the user equipment determinesthat the CSI-IM resource is the second resource not for interferencemeasurement, where the second resource may receive downlink data.

In another possible implementation manner, the user equipment determinesexistence of a CSI-IM resource in the subframe for receiving downlinkdata according to the CSI-IM configuration information and determinesexistence of at least one RE other than a non-zero power CSI-RS resourcein the CSI-IM resource according to the non-zero power CSI-RSconfiguration information, so that the user equipment determines thatthe CSI-IM resource is the second resource not for interferencemeasurement, where the second resource may receive downlink data.

In another possible implementation manner, according to the CSI-IMconfiguration information, the user equipment determines that a CSI-IMresource exists in the subframe for receiving downlink data, anddetermines that the CSI-IM resource is for receiving downlink data sentby the base station, so that the user equipment determines that theCSI-IM resource is the second resource not for interference measurement,where the second resource may receive downlink data.

In the scenarios described above, the user equipment may performinterference measurement on the first resource in the subframe forreceiving downlink data, or perform no interference measurement butreceive data on the second resource in the subframe for receivingdownlink data, that is, the interference measurement on the firstresource and the data receiving on the second resource do not occursimultaneously.

Persons skilled in the art can understand that, when the first subframeis a subframe for receiving downlink data, the above example shall notbe construed as a limitation to how the user equipment determines asecond resource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information.

In the embodiment of the present invention, when the first subframe is asubframe for receiving downlink data, the user equipment determines asecond resource not for interference measurement in a first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information, and performs interferencemeasurement on the first resource in the subframe for receiving downlinkdata or performs no interference measurement but receives data on thesecond resource in the subframe for receiving downlink data. Therefore,the UE receives only interfering signals rather than data signals whenmeasuring interference, and the UE can measure interference accurately.

In addition, when the first subframe is a subframe for receivingdownlink data, the determining, by the user equipment, a first resourcefor interference measurement in the first subframe according to at leastone of the zero-power CSI-RS configuration information, the non-zeropower CSI-RS configuration information, and the CSI-IM configurationinformation, includes the following implementation manner:

In a possible implementation manner, the user equipment determinesexistence of a CSI-IM resource in the subframe for receiving downlinkdata and existence of at least one RE, which is a zero-power CSI-RSresource, in the CSI-IM resource according to the CSI-IM configurationinformation and the zero-power CSI-RS configuration information, so thatthe user equipment determines that an RE, which is a zero-power CSI-RSresource, in the CSI-IM resource is the first resource for interferencemeasurement.

In a specific implementation process, the user equipment determinesexistence of the CSI-IM resource in the subframe for receiving downlinkdata according to the CSI-IM configuration information and determinesexistence of at least one RE, which is a zero-power CSI-RS resource, inthe CSI-IM resource according to the zero-power CSI-RS configurationinformation, and therefore, the user equipment determines that the RE,which is a zero-power CSI-RS resource, in the CSI-IM resource is thefirst resource for interference measurement, and performs interferencemeasurement on the first resource. The user equipment may performinterference measurement on the first resource in the subframe forreceiving downlink data.

In another possible implementation manner, according to the CSI-IMconfiguration information, the user equipment determines that a CSI-IMresource exists in the subframe for receiving downlink data, anddetermines that at least one RE in the CSI-IM resource is not forreceiving downlink data sent by the base station, so that the userequipment determines that the RE not for receiving downlink data sent bythe base station in the CSI-IM resource is the first resource forinterference measurement.

In a specific implementation process, when the user equipmentdetermines, according to the CSI-IM configuration information, that atleast one RE in the CSI-IM resource is not for receiving downlink datasent by the base station, the user equipment determines that the RE notfor receiving downlink data sent by the base station in the CSI-IMresource is the first resource for interference measurement, that is,performs only interference measurement but receives no downlink data.

In the embodiment of the present invention, when the first subframe is asubframe not for receiving downlink data, the user equipment determinesexistence of a CSI-IM resource in the subframe for receiving downlinkdata and existence of at least one RE, which is a zero-power CSI-RSresource, in the CSI-IM resource, and therefore, the user equipmentdetermines that the RE, which is a zero-power CSI-RS resource, in theCSI-IM resource is the first resource for interference measurement.Alternatively, according to the CSI-IM configuration information, theuser equipment determines existence of a CSI-IM resource in the subframefor receiving downlink data and determines that at least one RE in theCSI-IM resource is not for receiving downlink data sent by the basestation, and therefore, the user equipment determines that the RE notfor receiving downlink data sent by the base station in the CSI-IMresource is the first resource for interference measurement. In thisway, the UE receives only interfering signals rather than data signalswhen measuring interference, and the UE can measure interferenceaccurately.

Based on the embodiment shown in FIG. 1, when the first subframe is acandidate interference measurement reference resource subframe, thedetermining, by the user equipment, a second resource not forinterference measurement in the first subframe or determining a firstresource for interference measurement in the first subframe according toat least one of the zero-power CSI-RS configuration information, thenon-zero power CSI-RS configuration information, and the CSI-IMconfiguration information, may specifically include the followingimplementation manners:

In a possible implementation manner, the user equipment determinesexistence of a CSI-IM resource in the first subframe and existence of atleast one RE, which is a non-zero power CSI-RS resource, in the CSI-IMresource according to the CSI-IM configuration information and thenon-zero power CSI-RS configuration information, so that the userequipment determines that the CSI-IM resource is the second resource notfor interference measurement.

In a specific implementation process, if the first subframe is acandidate interference measurement reference resource, that is, if thefirst subframe is available for interference measurement, the userequipment determines existence of a CSI-IM resource in the firstsubframe according to the CSI-IM configuration information, anddetermines existence of at least one RE, which is a non-zero powerCSI-RS resource, in the CSI-IM resource according to the non-zero powerCSI-RS configuration information, so that the user equipment determinesthat the CSI-IM resource is the second resource not for interferencemeasurement.

In another possible implementation manner, the user equipment determinesexistence of a CSI-IM resource in the first subframe and nonexistence ofany RE, which is a non-zero power CSI-RS resource, in the CSI-IMresource according to the CSI-IM configuration information and thenon-zero power CSI-RS configuration information, so that the userequipment determines that the CSI-IM resource is the first resource forinterference measurement.

In a specific implementation process, if the first subframe is acandidate interference measurement reference resource, that is, if thefirst subframe is available for interference measurement, the userequipment determines existence of a CSI-IM resource in the firstsubframe according to the CSI-IM configuration information, anddetermines nonexistence of any RE, which is a non-zero power CSI-RSresource, in the CSI-IM resource according to the non-zero power CSI-RSconfiguration information, so that the user equipment determines thatthe CSI-IM resource is the first resource for interference measurement.

In the embodiment of the present invention, when the first subframe is acandidate interference measurement reference resource subframe, the userequipment determines a second resource not for interference measurementin the first subframe or determines a first resource for interferencemeasurement in the first subframe according to at least one of thezero-power CSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information.Therefore, the UE receives only interfering signals rather than datasignals when measuring interference, and the UE can measure interferenceaccurately.

Based on the embodiment shown in FIG. 1, when the first subframe is asubframe not for receiving downlink data, the determining, by the userequipment, a first resource for interference measurement in the firstsubframe according to at least one of the zero-power CSI-RSconfiguration information, the non-zero power CSI-RS configurationinformation, and the CSI-IM configuration information, includes:

determining, by the user equipment, existence of a CSI-IM resource inthe subframe not for receiving downlink data and existence of at leastone RE other than a zero-power CSI-RS resource in the CSI-IM resourceaccording to the CSI-IM configuration information and the zero-powerCSI-RS configuration information, so that the user equipment determinesthat the CSI-IM resource is the first resource for interferencemeasurement.

In a specific implementation process, when the first subframe is asubframe not for receiving downlink data, the user equipment determinesexistence of a CSI-IM resource in the subframe not for receivingdownlink data according to the CSI-IM configuration information anddetermines existence of at least one RE other than a zero-power CSI-RSresource in the CSI-IM resource according to the zero-power CSI-RSconfiguration information, so that the user equipment determines thatthe CSI-IM resource is the first resource for interference measurement.Meanwhile, the user equipment performs interference measurement on thefirst resource in the subframe not for receiving downlink data.

In the embodiment of the present invention, when the first subframe is asubframe not for receiving downlink data, the user equipment determinesexistence of a CSI-IM resource in the subframe not for receivingdownlink data and determines existence of at least one RE other than azero-power CSI-RS resource in the CSI-IM resource, so that the userequipment determines that the CSI-IM resource is the first resource forinterference measurement. In this way, the UE receives only interferingsignals rather than data signals when measuring interference, and the UEcan measure interference accurately.

In all the embodiments described above, before the user equipmentdetermines a first resource for interference measurement in the firstsubframe or determines a second resource not for interferencemeasurement in the first subframe, the following implementation mannersare further included:

In a possible implementation manner, the user equipment receivesscheduling information sent by the base station, and the user equipmentdetermines, according to the scheduling information, information about asubframe for receiving downlink data.

As required by the measurement, the base station sends the schedulinginformation to the user equipment, and the user equipment may determine,according to the scheduling information, the subframe for receivingdownlink data.

In another possible implementation manner, the user equipment detectsthe scheduling information sent by the base station. If the userequipment detects no scheduling information, the user equipmentdetermines that the detected subframe is subframe not for receivingdownlink data.

The user equipment may further detect the scheduling information sent bythe base station. If the user equipment detects no schedulinginformation, the user equipment may determine that the detected subframeis the subframe not for receiving downlink data.

In the embodiment of the present invention, the user equipment receivesscheduling information sent by the base station, and the user equipmentcan determine, according to the scheduling information, the subframe forreceiving downlink data.

In all the embodiments described above, before the determining a firstresource for interference measurement in the first subframe ordetermining a second resource not for interference measurement in thefirst subframe, the method further includes:

receiving, by the user equipment, interference measurement indicationinformation sent by the base station, where the interference measurementindication information is used as an instruction of determining thefirst resource and performing interference measurement on the firstresource in the subframe or an instruction of determining the secondresource and performing no interference measurement on the secondresource in the subframe.

In a specific implementation process, the interference measurementindication information may be notified to the UE through higher layersignaling or dynamic signaling, and each CSI-IM resource configured bythe base station for the UE may have a piece of interference measurementindication information, which is used to instruct the UE to perform aninterference measurement action that is based on the correspondingCSI-IM resource.

Meanwhile, each CSI process configured by the base station for the UEmay have a piece of interference measurement indication information,which is used to instruct the UE to perform an interference measurementaction that is based on the CSI-IM resource in the corresponding CSIprocess. The CSI process includes a channel part and an interferencepart required for measuring the CSI, where the channel part is indicatedby a non-zero power CSI-RS, and the interference part is indicated by aCSI-IM.

The base station may also use a piece of interference measurementindication information to instruct the UE to perform an interferencemeasurement action that is based on at least one CSI-IM resource orbased on a CSI-IM resource in at least one CSI process respectively.

In the interference measurement method provided in the embodiment of thepresent invention, the UE receives the interference measurementindication information sent by the base station, so that the UE candetermine the first resource and perform interference measurement on thefirst resource in the subframe, or determine the second resource andperform no interference measurement on the second resource in thesubframe.

FIG. 2 is a schematic flowchart of an interference measurement methodaccording to Embodiment 2 of the present invention. As shown in FIG. 2,the entity for performing the embodiment of the present invention is abase station. The interference measurement method provided in theembodiments of the present invention includes:

S201. The base station sends at least one of zero-power channel stateinformation reference signal CSI-RS configuration information, non-zeropower CSI-RS configuration information, and channel state informationinterference measurement CSI-IM configuration information to a userequipment, so that the user equipment determines a first resource forinterference measurement in a first subframe or determines a secondresource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information.

When the base station requires the user equipment to report ameasurement report of interference measurement, the base station maysend at least one of the zero-power CSI-RS configuration information,the non-zero power CSI-RS configuration information, and the CSI-IMconfiguration information to the user equipment, and therefore,according to the configuration information, the user equipment candetermine the first resource for interference measurement in the firstsubframe or determine the second resource not for interferencemeasurement in the first subframe. In this way, the user equipmentperforms interference measurement on the first resource or receives dataon the second resource, and the user equipment receives no data whenmeasuring interference, and performs no interference measurement whenreceiving data.

In the interference measurement method provided in the embodiment of thepresent invention, the base station sends at least one of the zero-powerCSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information to auser equipment, so that the user equipment determines the first resourcefor interference measurement in the first subframe or determines thesecond resource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information, and the UE receives onlyinterfering signals rather than data signals when measuringinterference, which makes the UE measure the interference accurately.

Based on the embodiment shown in FIG. 2, the base station sends theinterference measurement indication information to the user equipment,where the interference measurement indication information is used as aninstruction of determining the first resource and performinginterference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.

In a specific implementation process, the base station may notify theinterference measurement indication information to the UE through higherlayer signaling or dynamic signaling, and each CSI-IM resourceconfigured by the base station for the UE may have a piece ofinterference measurement indication information, which is used toinstruct the UE to perform an interference measurement action that isbased on the corresponding CSI-IM resource.

Meanwhile, each CSI process configured by the base station for the UEmay have a piece of interference measurement indication information,which is used to instruct the UE to perform an interference measurementaction that is based on the CSI-IM resource in the corresponding CSIprocess. The CSI process includes a channel part and an interferencepart required for measuring the CSI, where the channel part is indicatedby a non-zero power CSI-RS, and the interference part is indicated by aCSI-IM.

The base station may also use the piece of interference measurementindication information to instruct the UE to perform an interferencemeasurement action that is based on at least one CSI-IM resource orbased on CSI-IM resources in at least one CSI process respectively.

In the interference measurement method provided in the embodiment of thepresent invention, the base station sends the interference measurementindication information to the UE, so that the UE can determine the firstresource and perform interference measurement on the first resource inthe subframe, or determine the second resource and perform nointerference measurement on the second resource in the subframe.

FIG. 3 is a structural diagram of a user equipment according toEmbodiment 1 of the present invention. As shown in FIG. 3, the userequipment 30 provided in the embodiment of the present inventionincludes a receiving module 31, a processing module 32, and a measuringmodule 33. The receiving module 31 is configured to receive at least oneof zero-power channel state information reference signal CSI-RSconfiguration information, non-zero power CSI-RS configurationinformation, and channel state information interference measurementCSI-IM configuration information that are sent by the base station.

The processing module 32 is configured to determine a first resource forinterference measurement in a first subframe or determine a secondresource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information.

The measuring module 33 is configured to perform interferencemeasurement on the first resource in the first subframe, or, perform nointerference measurement on the second resource in the first subframe.

The user equipment in this embodiment may be configured to execute themethod in the method embodiment shown in FIG. 1, and the implementationprinciples and the technical effects of the user equipment are similarto those of the method embodiment, and are not repeated here anyfurther.

Further, the first subframe is a subframe for receiving downlink data,and the processing module 32 determines a second resource not forinterference measurement in the first subframe according to at least oneof the zero-power CSI-RS configuration information, the non-zero powerCSI-RS configuration information, and the CSI-IM configurationinformation, and the processing module 32 is specifically configured to:

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one resource element RE otherthan, a zero-power CSI-RS resource, in the CSI-IM resource according tothe CSI-IM configuration information and the zero-power CSI-RSconfiguration information, so that the processing module 32 determinesthat the CSI-IM resource is the second resource not for interferencemeasurement; or

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one RE other than, a non-zeropower CSI-RS resource, in the CSI-IM resource according to the CSI-IMconfiguration information and the non-zero power CSI-RS configurationinformation, so that the processing module 32 determines that the CSI-IMresource is the second resource not for interference measurement; or

according to the CSI-IM configuration information, determine that aCSI-IM resource exists in the subframe for receiving downlink data, anddetermine that the CSI-IM resource is for receiving downlink data sentby the base station, so that the processing module 32 determines thatthe CSI-IM resource is the second resource not for interferencemeasurement.

Further, the processing module 32 is specifically configured to:

perform no interference measurement on the second resource in thesubframe for receiving downlink data.

Further, the first subframe is a candidate interference measurementreference resource subframe, the processing module 32 determines asecond resource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information, and the processing module 32 isspecifically configured to:

determine existence of a CSI-IM resource in the first subframe andexistence of at least one RE, which is a non-zero power CSI-RS resource,in the CSI-IM resource according to the CSI-IM configuration informationand the non-zero power CSI-RS configuration information, so that theprocessing module 32 determines that the CSI-IM resource is the secondresource not for interference measurement.

Further, the first subframe is a candidate interference measurementreference resource subframe, the processing module 32 determines a firstresource for interference measurement in the first subframe according toat least one of the zero-power CSI-RS configuration information, thenon-zero power CSI-RS configuration information, and the CSI-IMconfiguration information, and the processing module 32 is specificallyconfigured to:

determine existence of a CSI-IM resource in the first subframe andnonexistence of any RE, which is a non-zero power CSI-RS resource, inthe CSI-IM resource according to the CSI-IM configuration informationand the non-zero power CSI-RS configuration information, so that theprocessing module 32 determines that the CSI-IM resource is the firstresource for interference measurement.

Further, the first subframe is a subframe not for receiving downlinkdata, the processing module 32 determines a first resource forinterference measurement in the first subframe according to at least oneof the zero-power CSI-RS configuration information, the non-zero powerCSI-RS configuration information, and the CSI-IM configurationinformation, and the processing module 32 is specifically configured to:

determine existence of a CSI-IM resource in the subframe not forreceiving downlink data and existence of at least one RE other than azero-power CSI-RS resource in the CSI-IM resource according to theCSI-IM configuration information and the zero-power CSI-RS configurationinformation, so that the processing module 32 determines that the CSI-IMresource is the first resource for interference measurement.

Further, the measuring module 33 is specifically configured to:

perform interference measurement on the first resource in the subframenot for receiving downlink data.

Further, the first subframe is a subframe for receiving downlink data,the processing module 32 determines a first resource for interferencemeasurement in the first subframe according to at least one of thezero-power CSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information, andthe processing module 32 is specifically configured to:

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one RE, which is a zero-powerCSI-RS resource, in the CSI-IM resource according to the CSI-IMconfiguration information and the zero-power CSI-RS configurationinformation, so that the processing module 32 determines that an RE,which is a zero-power CSI-RS resource, in the CSI-IM resource is thefirst resource for interference measurement; or

according to the CSI-IM configuration information, determine that aCSI-IM resource exists in the subframe for receiving downlink data, anddetermine that at least one RE in the CSI-IM resource is not forreceiving downlink data sent by the base station, so that the processingmodule 32 determines that the RE not for receiving downlink data sent bythe base station in the CSI-IM resource is the first resource forinterference measurement.

Further, the measuring module 33 is specifically configured to:

perform interference measurement on the first resource in the subframefor receiving downlink data.

Further, before a first resource for interference measurement in thefirst subframe is determined or a second resource not for interferencemeasurement in the first subframe is determined, the receiving module 31is further specifically configured to:

receive scheduling information sent by the base station; and determine,according to the scheduling information, information about the subframefor receiving downlink data.

Further, before a first resource for interference measurement in thefirst subframe is determined or a second resource not for interferencemeasurement in the first subframe is determined, the receiving module 31is further specifically configured to:

detect scheduling information sent by the base station; and

if the scheduling information is not detected, determine that a detectedsubframe is subframe not for receiving downlink data.

Further, before a first resource for interference measurement in thefirst subframe is determined or a second resource not for interferencemeasurement in the first subframe is determined, the receiving module 31is further specifically configured to:

receive interference measurement indication information sent by the basestation, where the interference measurement indication information isused as an instruction of determining the first resource and performinginterference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.

Further, the interference measurement indication information correspondsto at least one CSI-IM resource configured by the base station for theuser equipment, or corresponds to at least one CSI process configured bythe base station for the user equipment.

The user equipment in this embodiment may be configured to execute themethod in the method embodiment described above, and the implementationprinciples and the technical effects of the user equipment are similarto those of the method embodiment, and are not repeated here anyfurther.

FIG. 4 is a schematic structural diagram of a base station according toEmbodiment 1 of the present invention. As shown in FIG. 4, the basestation 40 provided in the embodiment of the present invention includesa sending module 41. The sending module 41 is configured to send atleast one of zero-power CSI-RS configuration information, non-zero powerCSI-RS configuration information, and CSI-IM configuration informationto a user equipment, so that the user equipment determines a firstresource for interference measurement in a first subframe or determinesa second resource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information.

The base station in this embodiment may be configured to execute themethod in the method embodiment shown in FIG. 2, and the implementationprinciples and the technical effects of the base station are similar tothose of the method embodiment, and are not repeated here any further.

Further, the sending module 41 is further configured to:

send scheduling information to the user equipment, so that the userequipment determines, according to the scheduling information,information about a subframe for receiving downlink data.

Further, the sending module 41 is further specifically configured to:

send interference measurement indication information to the userequipment, where the interference measurement indication information isused as an instruction of determining the first resource and performinginterference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.

Further, the interference measurement indication information correspondsto at least one CSI-RS resource configured by the base station for theuser equipment, or corresponds to at least one CSI process configured bythe base station for the user equipment.

The base station in this embodiment may be configured to execute themethod in the method embodiment described above, and the implementationprinciples and the technical effects of the base station are similar tothose of the method embodiment, and are not repeated here any further.

FIG. 5 is a schematic structural diagram of a user equipment accordingto Embodiment 2 of the present invention. As shown in FIG. 5, the userequipment 50 provided in the embodiment of the present inventionincludes at least one memory 51, at least one RF (Radio Frequency, radiofrequency, RF for short) circuit 52, at least one receiver 53, and aprocessor 54. The memory 51 may include a high-speed random accessmemory, a non-volatile solid storage device, and so on. The radiofrequency circuit 52 is configured to receive a baseband signal from anantenna and send a baseband signal by using the antenna. The receiver 53is configured to receive at least one of zero-power channel stateinformation reference signal CSI-RS configuration information, non-zeropower CSI-RS configuration information, and channel state informationinterference measurement CSI-IM configuration information that are sentby a base station. The processor 54 is configured to determine a firstresource for interference measurement in a first subframe or determine asecond resource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information. The processor 54 is furtherconfigured to perform interference measurement on the first resource inthe first subframe, or, perform no interference measurement on thesecond resource in the first subframe.

The user equipment in this embodiment may be configured to execute themethod in the method embodiment shown in FIG. 1, and the implementationprinciples and the technical effects of the user equipment are similarto those of the method embodiment, and are not repeated here anyfurther.

Further, the first subframe is a subframe for receiving downlink data,the processor 54 determines a second resource not for interferencemeasurement in the first subframe according to at least one of thezero-power CSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information, andthe processor 54 is specifically configured to:

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one resource element RE otherthan a zero-power CSI-RS resource in the CSI-IM resource according tothe CSI-IM configuration information and the zero-power CSI-RSconfiguration information, so that the processor 54 determines that theCSI-IM resource is the second resource not for interference measurement;or

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one RE other than a non-zeropower CSI-RS resource in the CSI-IM resource according to the CSI-IMconfiguration information and the non-zero power CSI-RS configurationinformation, so that the processor 54 determines that the CSI-IMresource is the second resource not for interference measurement; or

according to the CSI-IM configuration information, determine that aCSI-IM resource exists in the subframe for receiving downlink data, anddetermine that the CSI-IM resource is for receiving downlink data sentby the base station, so that the processor 54 determines that the CSI-IMresource is the second resource not for interference measurement.

Further, the processor 54 is specifically configured to:

perform no interference measurement on the second resource in thesubframe for receiving downlink data.

Further, the first subframe is a candidate interference measurementreference resource subframe, the processor 54 determines a secondresource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information, and the processor 54 isspecifically configured to:

determine existence of a CSI-IM resource in the first subframe andexistence of at least one RE, which is a non-zero power CSI-RS resource,in the CSI-IM resource according to the CSI-IM configuration informationand the non-zero power CSI-RS configuration information, so that theprocessor 54 determines that the CSI-IM resource is the second resourcenot for interference measurement.

Further, the first subframe is a candidate interference measurementreference resource subframe, the processor 54 determines a firstresource for interference measurement in the first subframe according toat least one of the zero-power CSI-RS configuration information, thenon-zero power CSI-RS configuration information, and the CSI-IMconfiguration information, and the processor 54 is specificallyconfigured to:

determine existence of a CSI-IM resource in the first subframe andnonexistence of any RE, which is a non-zero power CSI-RS resource, inthe CSI-IM resource according to the CSI-IM configuration informationand the non-zero power CSI-RS configuration information, so that theprocessor 54 determines that the CSI-IM resource is the first resourcefor interference measurement.

Further, the first subframe is a subframe not for receiving downlinkdata, the processor 54 determines a first resource for interferencemeasurement in the first subframe according to at least one of thezero-power CSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information, andthe processor 54 is specifically configured to:

determine existence of a CSI-IM resource in the subframe not forreceiving downlink data and existence of at least one RE other than azero-power CSI-RS resource in the CSI-IM resource according to theCSI-IM configuration information and the zero-power CSI-RS configurationinformation, so that the processor 54 determines that the CSI-IMresource is the first resource for interference measurement.

Further, the processor 54 is further specifically configured to:

perform interference measurement on the first resource in the subframenot for receiving downlink data.

Further, the first subframe is a subframe for receiving downlink data,the processor 54 determines a first resource for interferencemeasurement in the first subframe according to at least one of thezero-power CSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information, andthe processor 54 is specifically configured to:

determine existence of a CSI-IM resource in the subframe for receivingdownlink data and existence of at least one RE, which is a zero-powerCSI-RS resource, in the CSI-IM resource according to the CSI-IMconfiguration information and the zero-power CSI-RS configurationinformation, so that the processor 54 determines that an RE, which is azero-power CSI-RS resource, in the CSI-IM resource is the first resourcefor interference measurement; or

according to the CSI-IM configuration information, determine that aCSI-IM resource exists in the subframe for receiving downlink data, anddetermine that at least one RE in the CSI-IM resource is not forreceiving downlink data sent by the base station, so that the processor54 determines that the RE not for receiving downlink data sent by thebase station in the CSI-IM resource is the first resource forinterference measurement.

Further, the processor 54 is further specifically configured to:

perform interference measurement on the first resource in the subframefor receiving downlink data.

Further, before a first resource for interference measurement in thefirst subframe is determined or a second resource not for interferencemeasurement in the first subframe is determined, the receiver 53 isfurther specifically configured to:

receive scheduling information sent by the base station; and

determine, according to the scheduling information, information aboutthe subframe for receiving downlink data.

Further, before a first resource for interference measurement in thefirst subframe is determined or a second resource not for interferencemeasurement in the first subframe is determined, the receiver 53 isfurther specifically configured to:

detect scheduling information sent by the base station; and

if the scheduling information is not detected, determine that a detectedsubframe is subframe not for receiving downlink data.

Further, before a first resource for interference measurement in thefirst subframe is determined or a second resource not for interferencemeasurement in the first subframe is determined, the receiver 53 isfurther specifically configured to:

receive interference measurement indication information sent by the basestation, where the interference measurement indication information isused as an instruction of determining the first resource and performinginterference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.

Further, the interference measurement indication information correspondsto at least one CSI-IM resource configured by the base station for theuser equipment, or corresponds to at least one CSI process configured bythe base station for the user equipment.

The user equipment in this embodiment may be configured to execute themethod in the method embodiment described above, and the implementationprinciples and the technical effects of the user equipment are similarto those of the method embodiment, and are not repeated here anyfurther.

FIG. 6 is a schematic structural diagram of a base station according toEmbodiment 2 of the present invention. As shown in FIG. 6, the basestation 60 provided in the embodiment of the present invention includesa baseband subrack 61, a radio frequency subrack 62, a multi-carrierpower amplifier subrack 63, and a sender 64. The baseband subrack 61primarily handles dedicated and common channels to a UE, and is formedby a radio network controller, a main processor group, and anasynchronous transfer mode network. The radio frequency subrack 62 isformed by multiple radio frequency units, and can implementdigital/analog conversion, radio frequency signal modulation, andcarrier aggregation and splitting. The multi-carrier power amplifiersubrack 63 is configured to amplify power. The sender 64 is configuredto send at least one of zero-power CSI-RS configuration information,non-zero power CSI-RS configuration information, and CSI-IMconfiguration information to a user equipment, so that the userequipment determines a first resource for interference measurement in afirst subframe or determines a second resource not for interferencemeasurement in the first subframe according to at least one of thezero-power CSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information.

The base station in this embodiment may be configured to execute themethod in the method embodiment shown in FIG. 2, and the implementationprinciples and the technical effects of the base station are similar tothose of the method embodiment, and are not repeated here any further.

Further, the sender 64 is further configured to:

send scheduling information to the user equipment, so that the userequipment determines, according to the scheduling information,information about a subframe for receiving downlink data.

Further, the sender 64 is further specifically configured to:

send interference measurement indication information to the userequipment, where the interference measurement indication information isused as an instruction of determining the first resource and performinginterference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.

Further, the interference measurement indication information correspondsto at least one CSI-RS resource configured by the base station for theuser equipment, or corresponds to at least one CSI process configured bythe base station for the user equipment.

The base station in this embodiment may be configured to execute themethod in the method embodiment described above, and the implementationprinciples and the technical effects of the base station are similar tothose of the method embodiment, and are not repeated here any further.

Persons of ordinary skill in the art may understand that, all or a partof the steps of the foregoing method embodiments may be implemented by aprogram instructing relevant hardware. The foregoing programs may bestored in a computer readable storage medium. When the program runs, thesteps of the forgoing method embodiments are performed. The foregoingstorage medium includes various media capable of storing program code,such as a ROM, a RAM, a magnetic disk, and an optical disc.

Finally, it should be noted that the foregoing embodiments are merelyintended for describing the technical solutions of the present inventionrather than limiting the present invention. Although the presentinvention is described in detail with reference to the foregoingembodiments, persons of ordinary skill in the art should understand thatthey may still make modifications to the technical solutions describedin the foregoing embodiments, or make equivalent replacements to some orall the technical features thereof, as long as such modifications orreplacements do not cause the essence of corresponding technicalsolutions to depart from the scope of the technical solutions of theembodiments of the present invention.

The invention claimed is:
 1. An interference measurement method,comprising: receiving, by a user equipment, at least one of zero-powerchannel state information reference signal (CSI-RS) configurationinformation, non-zero power CSI-RS configuration information, andchannel state information interference measurement (CSI-IM)configuration information that are sent by a base station; determining,by the user equipment, a first resource for interference measurement ina first subframe or determining a second resource not for interferencemeasurement in the first subframe according to at least one of thezero-power CSI-RS configuration information, the non-zero power CSI-RSconfiguration information, and the CSI-IM configuration information; andperforming, by the user equipment, the interference measurement on thefirst resource in the first subframe when the first resource of thefirst subframe is not used to receive downlink data, or, performing nointerference measurement on the second resource in the first subframewhen the first subframe is receiving the downlink data.
 2. The methodaccording to claim 1, wherein the first subframe is a subframe forreceiving downlink data, and determining the second resource not for theinterference measurement in the first subframe, further comprises one ofthe following: determining, by the user equipment, existence of a CSI-IMresource exists in the subframe for receiving the downlink data and atleast one resource element (RE) other than a zero-power CSI-RS resourceexists in the CSI-IM resource according to the CSI-IM configurationinformation and the zero-power CSI-RS configuration information, so thatthe user equipment determines that the CSI-IM resource is the secondresource not for the interference measurement; determining, by the userequipment, the CSI-IM resource in the subframe for receiving thedownlink data and at least one RE other than a non-zero power CSI-RSresource exists in the CSI-IM resource according to the CSI-IMconfiguration information and the non-zero power CSI-RS configurationinformation, so that the user equipment determines that the CSI-IMresource is the second resource not for the interference measurement;and according to the CSI-IM configuration information, determining, bythe user equipment, that the CSI-IM resource exists in the subframe forreceiving the downlink data, and determining that the CSI-IM resource isfor receiving the downlink data sent by the base station, so that theuser equipment determines that the CSI-IM resource is the secondresource not for the interference measurement.
 3. The method accordingto claim 1, further comprising: sending, by the base station, schedulinginformation to the user equipment, to enable the user equipment todetermine, according to the scheduling information, information about asubframe for receiving the downlink data.
 4. The method according toclaim 1, wherein: the first subframe is a candidate interferencemeasurement reference resource subframe, and when determining the secondresource not for the interference measurement in the first subframe, themethod further comprises: determining a CSI-IM resource exists in thefirst subframe and at least one resource element (RE), which is anon-zero power CSI-RS resource, exists in the CSI-IM resource accordingto the CSI-IM configuration information and the non-zero power CSI-RSconfiguration information; and determining that the CSI-IM resource isthe second resource not for the interference measurement.
 5. The methodaccording to claim 1, wherein: the first subframe is a candidateinterference measurement reference resource subframe, and whendetermining the first resource for the interference measurement in thefirst subframe, the method further comprises: determining a CSI-IMresource exists in the first subframe and no resource element (RE),which is a non-zero power CSI-RS resource, exists in the CSI-IM resourceaccording to the CSI-IM configuration information and the non-zero powerCSI-RS configuration information; and determining that the CSI-IMresource is the first resource for the interference measurement.
 6. Themethod according to claim 1, wherein: when the first subframe is asubframe not for receiving the downlink data, and when determining thefirst resource for interference measurement in the first subframe, themethod further comprises: determining a CSI-IM resource exists in thesubframe not for receiving the downlink data and at least one resourceelement (RE) other than a zero-power CSI-RS resource exists in theCSI-IM resource according to the CSI-IM configuration information andthe zero-power CSI-RS configuration information; and determining thatthe CSI-IM resource is the first resource for the interferencemeasurement.
 7. A user equipment, comprising: a receiver, configured toreceive at least one of zero-power channel state information referencesignal (CSI-RS) configuration information, non-zero power CSI-RSconfiguration information, and channel state information interferencemeasurement (CSI-IM) configuration information that are sent by a basestation; and a processor, configured to determine a first resource forinterference measurement in a first subframe or determine a secondresource not for interference measurement in the first subframeaccording to at least one of the zero-power CSI-RS configurationinformation, the non-zero power CSI-RS configuration information, andthe CSI-IM configuration information, wherein the processor is furtherconfigured to perform the interference measurement on the first resourcein the first subframe when the first resource of the first subframe isnot used to receive downlink data, or, perform no interferencemeasurement on the second resource in the first subframe when the firstsubframe is receiving the downlink data.
 8. The user equipment accordingto claim 7, wherein: when the first subframe is a subframe for receivingthe downlink data, and when determining the second resource not for theinterference measurement in the first subframe, the processor is furtherconfigured to implement one of the following: determining a CSI-IMresource exists in the subframe for receiving the downlink data and atleast one resource element (RE) other than a zero-power CSI-RS resourceexists in the CSI-IM resource according to the CSI-IM configurationinformation and the zero-power CSI-RS configuration information, so thatthe processor determines that the CSI-IM resource is the second resourcenot for the interference measurement; determining the CSI-IM resourceexists in the subframe for receiving the downlink data and the at leastone RE other than the non-zero power CSI-RS resource exists in theCSI-IM resource according to the CSI-IM configuration information andthe non-zero power CSI-RS configuration information, so that theprocessor determines that the CSI-IM resource is the second resource notfor the interference measurement; and according to the CSI-IMconfiguration information, determining that the CSI-IM resource existsin the subframe for receiving the downlink data, and determine that theCSI-IM resource is for receiving the downlink data sent by the basestation, so that the processor determines that the CSI-IM resource isthe second resource not for the interference measurement.
 9. The userequipment according to claim 7, wherein: the first subframe is acandidate interference measurement reference resource subframe, and whendetermining the second resource not for the interference measurement inthe first subframe, the processor is further configured to: determine aCSI-IM resource exists in the first subframe and at least one resourceelement (RE), which is a non-zero power CSI-RS resource, exists in theCSI-IM resource according to the CSI-IM configuration information andthe non-zero power CSI-RS configuration information, so that theprocessor determines that the CSI-IM resource is the second resource notfor the interference measurement.
 10. The user equipment according toclaim 7, wherein: the first subframe is a candidate interferencemeasurement reference resource subframe, and when determining the firstresource for the interference measurement in the first subframe, theprocessor is further configured to: determine a CSI-IM resource existsin the first subframe and no resource element (RE), which is a non-zeropower CSI-RS resource, exists in the CSI-IM resource according to theCSI-IM configuration information and the non-zero power CSI-RSconfiguration information, so that the processor determines that theCSI-IM resource is the first resource for the interference measurement.11. The user equipment according to claim 7, wherein: when the firstsubframe is a subframe not for receiving the downlink data, and whendetermining the first resource for interference measurement in the firstsubframe, the processor is further configured to: determine a CSI-IMresource exists in the subframe not for receiving the downlink data andat least one resource element (RE) other than a zero-power CSI-RSresource exists in the CSI-IM resource according to the CSI-IMconfiguration information and the zero-power CSI-RS configurationinformation, so that the processor determines that the CSI-IM resourceis the first resource for the interference measurement.
 12. The userequipment according to claim 7, wherein: when the first subframe is asubframe for receiving the downlink data, and when determining the firstresource for the interference measurement in the first subframe, theprocessor is further configured to implement one of the following:determining a CSI-IM resource exists in the subframe for receiving thedownlink data and at least one resource element (RE), which is azero-power CSI-RS resource, exists in the CSI-IM resource according tothe CSI-IM configuration information and the zero-power CSI-RSconfiguration information, so that the processor determines that an RE,which is a zero-power CSI-RS resource, in the CSI-IM resource is thefirst resource for the interference measurement; and according to theCSI-IM configuration information, determining that a CSI-IM resourceexists in the subframe for receiving the downlink data, and determiningthat at least one RE in the CSI-IM resource is not for receiving thedownlink data sent by the base station, so that the processor determinesthat the RE not for receiving the downlink data sent by the base stationin the CSI-IM resource is the first resource for the interferencemeasurement.
 13. The user equipment according to claim 7, wherein:before the first resource for the interference measurement in the firstsubframe is determined or the second resource not for the interferencemeasurement in the first subframe is determined, the receiver is furtherconfigured to: receive scheduling information sent by the base station;and determine, according to the scheduling information, informationabout the subframe for receiving the downlink data.
 14. The userequipment according to claim 7, wherein: before the first resource forinterference measurement in the first subframe is determined or thesecond resource not for interference measurement in the first subframeis determined, the receiver is further configured to: detect schedulinginformation sent by the base station; and when the schedulinginformation is not detected, determine that a detected subframe is asubframe not for receiving the downlink data.
 15. The user equipmentaccording to claim 7, wherein: before the first resource forinterference measurement in the first subframe is determined or thesecond resource not for interference measurement in the first subframeis determined, the receiver is further configured to: receiveinterference measurement indication information sent by the basestation, wherein the interference measurement indication information isused as an instruction of determining the first resource and performingthe interference measurement on the first resource in the subframe or aninstruction of determining the second resource and performing nointerference measurement on the second resource in the subframe.
 16. Theuser equipment according to claim 15, wherein the interferencemeasurement indication information corresponds to at least one CSI-1Mresource configured by the base station for the user equipment, orcorresponds to at least one CSI process configured by the base stationfor the user equipment.